<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>相对定位</title>
  <style>
    div{
      width: 100px;
      height: 100px;
      border:1px solid red;
    }
    div:hover{
      /*margin:  10px 0 0 10px ;*/
    /* 设置相对定位：通过left|right|top|bottom实现 */
      position: relative;
      top:10px;
      left: 10px;
    }
  </style>
</head>
<body>
<div>div1</div>
<div>div2</div>
<div>div3</div>
</body>
</html>